Question

A user on a web site can click on a button to vote for one image after another. This sends some requests to a MySQL database through jQuery. I’m not sure but the web site account probably allows 10 connections maximum.

In this context, can repeated clicking by a single user cause multiple requests and in turn cause performance issues? If so, what simple ways exist to throttle requests?

Edit: Question reformulated as flagged as unclear.

Answer 1

If there is no reason for anyone to ever click the button more then once every few seconds, just setup a disable function for that button. So when it is clicked it is disabled for 5 seconds, then renables again.

You may want to look up a better timer method, this is one way i know off hand.

You can use
Button onclick-

document.getElementById("button").disabled = true;
var enableButton = setInterval( "enableButton()", 5000 );

function enableButton()
{
document.getElementById("button").disabled = false;
clearInterval(enableButton)
}

Good Luck